I'll start us off with these two items:
1) Siri Eyes Free. This is available in the 2014 CTS, 2015 ATS, and 2015 XTS (and 2014 Chevy Volt, Sonic, Spark, Camaro, Cruze, Equinox, Malibu, and SS).
2) Text Messaging. This is available in the same vehicles as Siri Eyes Free and various Cadillac models that don't have Siri.
So one of the most expensive, exclusive vehicles in the GM lineup doesn't have the advanced tech available in a $16,840 Chevy Spark.
1) Siri Eyes Free. This is available in the 2014 CTS, 2015 ATS, and 2015 XTS (and 2014 Chevy Volt, Sonic, Spark, Camaro, Cruze, Equinox, Malibu, and SS).
2) Text Messaging. This is available in the same vehicles as Siri Eyes Free and various Cadillac models that don't have Siri.
So one of the most expensive, exclusive vehicles in the GM lineup doesn't have the advanced tech available in a $16,840 Chevy Spark.